I had a couple of Purolator PL24651 filters in my stash and thought I would run at least one of them for 3000 miles to see how these were doing rather than use them for target practice. I figured the filter should go 3000 miles in 2 months using Maxlife 5W30.

Purolator PL24651Date code: F07F30G1

After 3000 miles, I did notice a little startup rattle so I arranged to see if the ADBV held or not. I came in from a long run, parked the truck and after a couple hours spun the filter off expecting to see a flood of oil which would be normal for this engine. About a tablespoon of oil fell into the drain pan from removing the filter. This means the filter did not have ADBV function. The photos will show the ADBV is in pristine condition so the source of the leak down is not likely the ADBV itself. The ADBV had no tears or cuts and was one of the best ADBVs I have touched. I suspect the sealant they use between the base plate and the external can which holds the gasket is not complete or failing. I had to use a cap wrench to remove the filter as it would not budge. The gasket stuck to the filter mount. I like the gasket, but that is not why I would buy the filter.

If you look closely at photo #5 at about 9 O'clock on the base plate, you will see some black residue. I believe that to be the sealant. I do not know if this is the leakage path or not. It would need closer examination and dissection.

IMG_0567-Purolator PL24651-F07F30G1 Filter label

IMG_0569-Purolator PL24651-F07F30G1 Date Code

IMG_0566-Purolator PL24651-F07F30G1 Inside of can with leaf spring

IMG_0570-Purolator PL24651-F07F30G1 Inside surface of the base plate with silicone ADBV in place

IMG_0571-Purolator PL24651-F07F30G1 Inside surface of the base plate with silicone ADBV showing inlet side of the ADBV

IMG_0580-Purolator PL24651-F07F30G1 Base plate exterior view

IMG_0573-Purolator PL24651-F07F30G1 Filter media showing wide pleat spaces either side of the splice

IMG_0574-Purolator PL24651-F07F30G1 Filter media rotated 90 degrees

IMG_0575-Purolator PL24651-F07F30G1 Filter media rotated 180 degrees

IMG_0576-Purolator PL24651-F07F30G1 Filter media rotated 300 degrees

IMG_0577-Purolator PL24651-F07F30G1 Bypass valve

IMG_0578-Purolator PL24651-F07F30G1 Inlet/Outlet end of the filter

IMG_0579-Purolator PL24651-F07F30G1 Inlet/Outlet end of the filter on axis view

Since the filter did not tear on the short run, I will use the second one on another short run. I think the Valvoline Maxlife 5W30 shears down a bit after 2000 miles or so and this may contribute to how quickly the oil drains back.

Since the wide pleat spaces are still there, I do not want to take a risk running the filter type for a longer OCI / FCI.

I had a couple of Purolator PL24651 filters in my stash and thought I would run at least one of them for 3000 miles to see how these were doing rather than use them for target practice. I figured the filter should go 3000 miles in 2 months using Maxlife 5W30.

Purolator PL24651Date code: F07F30G1

After 3000 miles, I did notice a little startup rattle so I arranged to see if the ADBV held or not. I came in from a long run, parked the truck and after a couple hours spun the filter off expecting to see a flood of oil which would be normal for this engine. About a tablespoon of oil fell into the drain pan from removing the filter. This means the filter did not have ADBV function. The photos will show the ADBV is in pristine condition so the source of the leak down is not likely the ADBV itself. The ADBV had no tears or cuts and was one of the best ADBVs I have touched. I suspect the sealant they use between the base plate and the external can which holds the gasket is not complete or failing. I had to use a cap wrench to remove the filter as it would not budge. The gasket stuck to the filter mount. I like the gasket, but that is not why I would buy the filter.

If you look closely at photo #5 at about 9 O'clock on the base plate, you will see some black residue. I believe that to be the sealant. I do not know if this is the leakage path or not. It would need closer examination and dissection.

IMG_0567-Purolator PL24651-F07F30G1 Filter label

IMG_0569-Purolator PL24651-F07F30G1 Date Code

IMG_0566-Purolator PL24651-F07F30G1 Inside of can with leaf spring

IMG_0570-Purolator PL24651-F07F30G1 Inside surface of the base plate with silicone ADBV in place

IMG_0571-Purolator PL24651-F07F30G1 Inside surface of the base plate with silicone ADBV showing inlet side of the ADBV

IMG_0580-Purolator PL24651-F07F30G1 Base plate exterior view

IMG_0573-Purolator PL24651-F07F30G1 Filter media showing wide pleat spaces either side of the splice

IMG_0574-Purolator PL24651-F07F30G1 Filter media rotated 90 degrees

IMG_0575-Purolator PL24651-F07F30G1 Filter media rotated 180 degrees

IMG_0576-Purolator PL24651-F07F30G1 Filter media rotated 300 degrees

IMG_0577-Purolator PL24651-F07F30G1 Bypass valve

IMG_0578-Purolator PL24651-F07F30G1 Inlet/Outlet end of the filter

IMG_0579-Purolator PL24651-F07F30G1 Inlet/Outlet end of the filter on axis view

Since the filter did not tear on the short run, I will use the second one on another short run. I think the Valvoline Maxlife 5W30 shears down a bit after 2000 miles or so and this may contribute to how quickly the oil drains back.

Since the wide pleat spaces are still there, I do not want to take a risk running the filter type for a longer OCI / FCI.

Enjoy and let the discussions begin.

Welloiled.

I'm a bit lost as to why only spoonful of oil drained out. This filter actually looks OK

If only I could get my dam stubborn brother to stop using Purolator stuff

Thanks for posting. I think rather than use them in your car, target practice would be the better option for them.

I feel like I wasted the Maxlife.

And, you are welcome.

Well, you could have just changed the filter & left the oil in the sump (since virtually none was left in the removed filter)-Purolator, the ANTI-Ultra, TWO filters per standard OCI!

That would have worked.

Thanks again to the OP for reminding me that my decision to ditch Purolator for good was a wise one.

You guys are right. That would have worked. If I could have found a few more on close out, I could have done a Maxlife TBN retention study. 99.9% efficiency @ 20 microns ISO 4548-12 according to the box. That would be just prior to the tear.Bullwinkle, the filter was full of oil. Only a tablespoon or so came from above the filter.